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Related Experiment Video

Updated: Mar 26, 2026

Biosensor-based High Throughput Biopanning and Bioinformatics Analysis Strategy for the Global Validation of Drug-protein Interactions
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COMPASS II: extended coverage for polymer and drug-like molecule databases.

Huai Sun1, Zhao Jin2, Chunwei Yang2

  • 1School of Chemistry and Chemical Engineering and Key Laboratory of Scientific and Engineering Computing of Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200240, China. huaisun@sjtu.edu.cn.

Journal of Molecular Modeling
|January 28, 2016
PubMed
Summary

The COMPASS II force field extends coverage to polymers and drug-like molecules. New parameters maintain the original COMPASS force field quality for broader applications.

Keywords:
Force fieldHeterocyclic compoundsPolymersSimulation

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Area of Science:

  • Computational chemistry
  • Materials science
  • Drug discovery

Background:

  • The COMPASS force field is widely used for molecular modeling.
  • Existing force fields may lack comprehensive coverage for polymers and drug-like molecules.
  • Accurate molecular modeling requires robust force fields applicable to diverse chemical structures.

Purpose of the Study:

  • To extend the COMPASS force field to include polymer and drug-like molecules.
  • To develop new parameters for molecules found in popular chemical databases.
  • To ensure the extended force field maintains the predictive accuracy of the original COMPASS.

Main Methods:

  • Utilized a fragmentation method to create representative small molecules from databases.
  • Derived new valence parameters using quantum mechanical data.
  • Obtained nonbond parameters through fitting to experimental liquid and crystal data.
  • Implemented a quality assurance suite to validate new parameters against existing ones.

Main Results:

  • Successfully developed the COMPASS II force field with extended coverage.
  • New parameters were efficiently obtained for database compounds.
  • Validation confirmed that the quality and predictive accuracy of the original COMPASS were preserved.
  • The extended force field accurately predicts molecular properties, densities, and enthalpies.

Conclusions:

  • COMPASS II provides a validated extension of the COMPASS force field.
  • The new force field enables accurate modeling of polymers and drug-like molecules.
  • This advancement supports broader applications in materials science and drug discovery.